Expression modded Ernie Ball VP-Jr

I am going to be modding a bunch of VP-Jrs for expression use &#8211; I need a couple for myself so I figured I might as well do some extras and pass them on since people are always asking about this.

I can do either the TRS voltage divider type (think Moog EP-2) which is most common or the TS variable resistor type for Line 6. Other options include polarity reversal on the TRS type, a range pot, and pretty much anything else short of a custom taper on the potentiometer or a dual output (switchable between TRS and TS is possible though, just not both at the same time).

Base price for a single jack configuration is $100 + shipping

Other options will add $10 and up depending on how involved it is. Lead time should be less than 1 week now that I have some stock of all of the pots.

If you want one right now: I have one ready to go that is currently wired with a TRS jack and 10k pot, and will soon have parts for other variants including 50k pots that are more suitable for some expression controls. If you want this one now I&#8217;ll let it go for $90 since it&#8217;s got some sticky residue on the bottom. I&#8217;ll move the jack to any location and/or rewire it for TS operation (10k TS is the Line6 spec, incidentally).

It could be wired to still function as both (though not at the same time) but the taper would not be very good. The whole point of modding them is to get a linear taper pot rather than the audio taper used in a volume pedal.

Here is an email reply from Jean about using the EB with the Expressionator.

"Did you mod the Ernie Ball with a TRS jack? If so it should be fine, if you didn't put a TRS jack in there you can use an insert cable which is a TRS on one end split to 2 mono ends - put one end in the input and output of your EB and it should work fine.

The only negative about EB's for expression is that they have a volume (log) pot instead of a linear pot typically used in expression pedals. Much of the action is at the toe end of the throw... the "Anti-Log" taper fixes that, but for reverse and the more fun tapers, it's still going to be a LOG pot."

Cool that you are on this side of the border. Let me know what you think of Jean comments on the EB. I'll be using it on three Eventides down the road.

Steve, you can use the EB with the stock pot and either an insert cable (2x TS to TRS) or rewiring a TRS jack, but the taper will be off per Jean's comments. As he said the expressionator has an anti-log taper to fix that but all the other tapers will be affected.

The mods I am doing include changing the pot for a linear taper one that addresses this and makes it perform like other expression pedals, just with the feel and construction of the EB.